Compur - Model SDM-73 -Portable Gas Detectors for Wear and Tear Detection

In  the grease of stressed joints you will find iron particles caused by abrasion. The amount of iron in the oil is a good indicator for the greasing quality. It tells you if the oil need to be changed. Just take an oil sample with a disposable syringe and insert into the cuvette. The SDM 73 gives you a direct reading of the iron concentration. The iron content is displayed in ppm. Starting with a certain concentration an oil change is recommended.